牛和羊的脂肪沉积和分区用于肉类生产
Shimin Liu1, Yanyan Yang2, Hailing Luo3
1The UWA Institute of Agriculture, The University of Western Australia, Crawley, WA 6009, Australia.
Animal nutrition (Zhongguo xu mu shou yi xue hui)
|May 30, 2024
概括
改善牲畜肌肉内脂肪 (IMF) 是肉质的关键,但由于脂肪分离而具有挑战性. 了解遗传相关性和开发新的测量技术对于有效的选择和牛羊的加速遗传收益至关重要.
科学领域:
- 动物科学动物科学
- 遗传学 是一个遗传学.
- 营养科学 营养科学
背景情况:
- 肌肉内脂肪 (IMF) 对牛肉和绵羊肉质量至关重要.
- 增加IMF往往导致体脂肪过多,这对生产者来说是一个挑战.
- 了解脂肪在储存区 (IMF,皮下脂肪,内脏脂肪) 中的分化是必不可少的.
研究的目的:
- 探索改善牲畜肌内脂肪 (IMF) 水平的策略.
- 为了应对增加IMF的挑战,而不是促进过度的整体肥胖.
- 确定优化牛羊脂肪沉积的遗传和营养方法.
主要方法:
- 在不同基因型中分析IMF,皮下脂肪 (SCF) 和内脏脂肪 (VF) 之间的遗传相关性.
- 评估营养策略,如缩养,以促进国际货币基金组织的储存.
- 对现有和拟议的技术进行评估,以测量活体动物中的IMF和SCF.
主要成果:
- 国际货币基金组织的增长率与SCF和VF不同,使直接遗传选择复杂化.
- 营养策略,如过度缩的养,可以促进IMF的沉积.
- 由于个体和品种的变异,IMF的基因选择是可能的,但需要基因型特定的基因相关性和增殖率的数据.
结论:
- 为改进IMF进行准确的选择,需要了解基因型特定的脂肪分区和积累率.
- 需要开发新的现场技术,以便同时测量IMF和SCF.
- 通过早期检测IMF优势并对控制脂肪生成和脂质生成的特定基因进行选择,可以实现加速的遗传收益.
更多相关视频
08:37Author Spotlight: Evaluation of Lipid Droplet Size and Fusion in Bovine Hepatic Cells
Published on: March 10, 2023
2.5K
08:29Measuring Liver Mitochondrial Oxygen Consumption and Proton Leak Kinetics to Estimate Mitochondrial Respiration in Holstein Dairy Cattle
Published on: November 30, 2018
11.3K
相关概念视频
01:06Fats as Energy Storage Molecules
25.0K
Triglycerides are a form of long-term energy storage molecules. They are made of glycerol and three fatty acids. To obtain energy from fat, triglycerides must first be broken down by hydrolysis into their two principal components, fatty acids and glycerol. This process, called lipolysis, takes place in the cytoplasm. The resulting fatty acids are oxidized by β-oxidation into acetyl-CoA, which is used by the Krebs cycle. The glycerol that is released from triglycerides after lipolysis...
25.0K
01:02Hypodermis
4.4K
The hypodermis (the subcutaneous layer or superficial fascia) is present directly below the dermis. It connects the skin to the underlying fascia (fibrous tissue) of the bones and muscles. It is not strictly a part of the skin, although the border between the hypodermis and dermis can be difficult to distinguish. The hypodermis consists of well-vascularized, loose, areolar connective tissue and adipose tissue, which functions as a mode of fat storage and provides insulation and cushioning for...
4.4K
01:01Production Efficiency
16.8K
Net production efficiency (NPE) is the efficiency at which organisms assimilate energy into biomass for the next trophic level. Due to low metabolic rates and less energy spent on thermoregulatory processes, the NPE of ectotherms (cold-blooded animals) is 10 times higher than endotherms (warm-blooded animals).
16.8K
01:29Cholesterol: Significance and Regulation
536
Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces.
Considering cholesterol and...
Considering cholesterol and...
536